- Australioid
- Austral Islands
- Australoid
- Australoids
- australopith
- australopithecid
- australopithecids
- australopithecine
- australopithecines
- australopiths
- australs
- Austrasia
- Austria
- Austria-Hungary
- Austro-
- Austro-Asiatic
- Austronesia
- Austronesian
- Austronesians
- aut-
- autacoid
- autacoids
- autarch
- autarchies
- autarchs